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Chevy Colorado 2.8L I4 LK5 Swap

183K views 849 replies 56 participants last post by  wrench459 (R.I.P.)  
Todays intakes are more than likely made of plastic.
I've all way's shied away from them because of the lack of being able to easily improve the flow.
One case in point would be a 4.6L with PI heads. We had to remove the nice ported Alum. intake and replace it with a plastic unit to get the power up to the levels we wanted. So go figure:confused:
Another area where work needs to be done. Man I hate R&D on my nickle.
From what I understand the 96-97 4.6 Thunderbirds were faster than the 94-96 because of the plastic intakes though they are more prone to cracking and leaking.